X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Frender.h;h=f2ded79d6c117432cb68a788be0f299084c33ddd;hb=d1d0556e538bf04cb0b991b7acb205c144a2f826;hp=af779843b9209195cc5cab8c77acff87a5bf9224;hpb=f550aee00a62fe1d8baf62d83cd7efef6cc2ee92;p=pspp

diff --git a/src/output/render.h b/src/output/render.h
index af779843b9..f2ded79d6c 100644
--- a/src/output/render.h
+++ b/src/output/render.h
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2009, 2010, 2011, 2014 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -19,7 +19,7 @@
 
 #include <stdbool.h>
 #include <stddef.h>
-#include <output/table-provider.h>
+#include "output/table-provider.h"
 
 struct table;
 
@@ -44,6 +44,19 @@ struct render_params
     int (*measure_cell_height) (void *aux, const struct table_cell *cell,
                                 int width);
 
+    /* Given that there is space measuring WIDTH by HEIGHT to render CELL,
+       where HEIGHT is insufficient to render the entire height of the cell,
+       returns the largest height less than HEIGHT at which it is appropriate
+       to break the cell.  For example, if breaking at the specified HEIGHT
+       would break in the middle of a line of text, the return value would be
+       just sufficiently less that the breakpoint would be between lines of
+       text.
+
+       Optional.  If NULL, the rendering engine assumes that all breakpoints
+       are acceptable. */
+    int (*adjust_break) (void *aux, const struct table_cell *cell,
+                         int width, int height);
+
     /* Draws a generalized intersection of lines in the rectangle whose
        top-left corner is (BB[TABLE_HORZ][0], BB[TABLE_VERT][0]) and whose
        bottom-right corner is (BB[TABLE_HORZ][1], BB[TABLE_VERT][1]).
@@ -78,6 +91,11 @@ struct render_params
 
     /* Width of different kinds of lines. */
     int line_widths[TABLE_N_AXES][RENDER_N_LINES];
+
+    /* Minimum cell width or height before allowing the cell to be broken
+       across two pages.  (Joined cells may always be broken at join
+       points.) */
+    int min_break[TABLE_N_AXES];
   };
 
 /* A "page" of content that is ready to be rendered.
@@ -93,14 +111,18 @@ void render_page_unref (struct render_page *);
 
 int render_page_get_size (const struct render_page *, enum table_axis);
 void render_page_draw (const struct render_page *);
+void render_page_draw_region (const struct render_page *,
+                              int x, int y, int w, int h);
+
+int render_page_get_best_breakpoint (const struct render_page *, int height);
 
 /* An iterator for breaking render_pages into smaller chunks. */
 struct render_break
   {
     struct render_page *page;   /* Page being broken up. */
     enum table_axis axis;       /* Axis along which 'page' is being broken. */
-    int cell;                   /* Next cell. */
-    int pixel;                  /* Pixel offset within 'cell' (usually 0). */
+    int z;                      /* Next cell along 'axis'. */
+    int pixel;                  /* Pixel offset within cell 'z' (usually 0). */
     int hw;                     /* Width of headers of 'page' along 'axis'. */
   };